e9 SEA ,^fOSSES. 



and cntnnglcd, so that it will look like a formless 

 mass of green as it rises to the surface of ihc water 

 and washes on shore. The only g\iiding mark is iu 

 long, straight, or inwardly cun'cd uliimale bninchlets. 

 These are con5i)icuous, and the cells of which they 

 arc made are also seven or eight times longer tlun 

 broad. The ftUments are as fine as human hair, six 

 or eight inches long, and have a very silky look wlicn 

 massed in the mounted s{)ccimen. The color is a 

 very bright yellowish green when fresh. Mr. Collins 

 finds it at Nahant between tide marks. It is a summer 

 plant. 



Cladophora clal'cescexs, Grut. 



Grows in tufts not much cnungled, on stones and 

 rocks, IxrtH'een tide marks and in |K)oIs, from three to 

 five inches high. 'Ilie branches divide and subdivide 

 excessively, are quite slender, and the uliimatr branches 

 are closely beset usually on the inside, >t alwa}'s 



on one side only, with a series of straight, acutely 

 branching undivided branchlets, composed of several 

 cells. In dr}nng, the chlorophyl is usually dissipated 

 to one end of the cell, making the plant under the 

 lens look somewhat variegated. The filaments arc 

 constricted at the joints of the cells. Color a jxile or 

 glaucous green. 



